S4-22RJ1 Equivalent & Substitute Parts

Part Overview

The S4-22RJ1 is a 22 Ohms ±5% 2W wirewound chip resistor in 4525 J-Lead package manufactured by Riedon. This current sense resistor features flame proof, moisture resistant, and pulse withstanding characteristics suitable for high-reliability applications. The part is Active status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained while offering improved tolerance or performance characteristics.

Substiute Parts

S4-22RJ1

RiedonIn Stock: 1144S4-22RJ1 Datasheet

Current PartRFQ

S4-22RF1

RiedonIn Stock: 1370S4-22RF1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S4-22RJ1 is determined by the following critical parameters:

• Resistance value: 22 Ohms (exact match required)
• Power rating: 2W (exact match required)
• Package type: 4525 J-Lead (exact match required)
• Composition: Wirewound (exact match required)
• Operating temperature range: -55°C ~ 275°C (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Physical dimensions: 0.449" L x 0.252" W, 0.197" max height (exact match required)
• Features: Current Sense, Flame Proof, Moisture Resistant, Pulse Withstanding, Safety (exact match required)
• Compliance: ROHS3, MSL 1 (exact match required)

The S4-22RF1 qualifies as a substitute because it maintains all critical electrical and mechanical parameters while offering improved tolerance specification (±1% versus ±5%).

Parameter Comparison

Engineering Selection Recommendations

Both S4-22RJ1 and S4-22RF1 are Active status components with ROHS3 compliance and unlimited moisture sensitivity rating. The S4-22RF1 substitute provides tighter tolerance specification (±1%) compared to the main part (±5%) while maintaining identical electrical performance, mechanical compatibility, and environmental ratings. Selection between these parts depends on circuit tolerance requirements and application specifications.

Frequently Asked Questions (FAQ)

Q: Can S4-22RF1 replace S4-22RJ1 in existing designs?

A: Yes. The S4-22RF1 maintains identical resistance value, power rating, package type, operating temperature range, and physical dimensions. The improved tolerance specification (±1% versus ±5%) provides enhanced precision without affecting mechanical or thermal compatibility.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts use the 4525 J-Lead package with dimensions of 0.449" L x 0.252" W (11.40mm x 6.40mm) and maximum seated height of 0.197" (5.00mm). PCB layout and assembly processes require no modification.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both S4-22RJ1 and S4-22RF1 are ROHS3 compliant with MSL 1 (Unlimited) rating and REACH affected status. Environmental and regulatory compliance is equivalent.

Q: What is the primary difference between these substitute parts?

A: The tolerance specification differs. S4-22RJ1 offers ±5% tolerance, while S4-22RF1 provides ±1% tolerance. All other electrical and mechanical parameters remain identical.

Q: Are both parts suitable for current sense applications?

A: Yes. Both parts feature current sense capability along with flame proof, moisture resistant, pulse withstanding, and safety characteristics. Thermal and electrical performance in current sense circuits is equivalent.